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Artykuły w czasopismach na temat "Freshwater fishes"

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Bury, Gwendolynn W., Rebecca Flitcroft, Mark D. Nelson, Ivan Arismendi i Evan B. Brooks. "Forest-Associated Fishes of the Conterminous United States". Water 13, nr 18 (15.09.2021): 2528. http://dx.doi.org/10.3390/w13182528.

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Freshwaters are important, interconnected, and imperiled. Aquatic ecosystems, including freshwater fishes, are closely tied to the terrestrial ecosystems they are embedded within, yet available spatially explicit datasets have been underutilized to determine associations between freshwater fishes and forested areas. Here, we determined the spatial co-occurrence between freshwater fish distributions and forests within 2129 watersheds of the conterminous United States. We identified 21% of freshwater fishes as associated with forested areas, and 2% as strictly present only in highly forested areas (75–100% forested). The northern coasts and southeast regions, both heavily forested, showed the largest numbers of forest-associated fishes in highly forested areas and fish species richness. Fish associated with low-forested areas occurred in the southwest and central plains. Imperiled fishes were relatively evenly distributed among percent forest categories, which was distinctly different from patterns for all fishes. The identification of forest-associated fishes provides insights regarding species-specific landscape contexts. Determining these large-scale patterns of freshwater biodiversity is necessary for conservation planning at regional levels, especially in highly impacted freshwater ecosystems.
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Coburn, Miles, i Maurice Kottelat. "European Freshwater Fishes". Copeia 1998, nr 4 (30.12.1998): 1116. http://dx.doi.org/10.2307/1447371.

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Rulifson, Roger A. "Migration of Freshwater Fishes". Transactions of the American Fisheries Society 132, nr 2 (marzec 2003): 406–7. http://dx.doi.org/10.1577/1548-8659(2003)132<0406b:>2.0.co;2.

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Daniels, Robert. "Freshwater Fishes of Virginia". Transactions of the American Fisheries Society 124, nr 2 (1.03.1995): 283–84. http://dx.doi.org/10.1577/1548-8659-124.2.283.

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Hutchings, Jeffrey A. "MIGRATION OF FRESHWATER FISHES". Copeia 2002, nr 3 (sierpień 2002): 878–79. http://dx.doi.org/10.1643/0045-8511(2002)002[0878:]2.0.co;2.

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Cadwallader, P. L., i R. M. McDowall. "New Zealand Freshwater Fishes". Copeia 1994, nr 4 (19.12.1994): 1054. http://dx.doi.org/10.2307/1446734.

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Burr, Brooks M., Melvin L. Warren, Robert E. Jenkins i Noel M. Burkhead. "Freshwater Fishes of Virginia". Copeia 1995, nr 1 (15.02.1995): 259. http://dx.doi.org/10.2307/1446835.

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Winfield, Ian J. "CONSERVATION OF FRESHWATER FISHES". Journal of Fish Biology 89, nr 5 (listopad 2016): 2465–66. http://dx.doi.org/10.1111/jfb.13146.

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Ottewell, D. "FRESHWATER FISHES OF BRITAIN". Journal of Fish Biology 90, nr 5 (maj 2017): 2222–23. http://dx.doi.org/10.1111/jfb.13302.

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Rose, George. "Migration of Freshwater Fishes". Fish and Fisheries 3, nr 4 (grudzień 2002): 361–62. http://dx.doi.org/10.1046/j.1467-2979.2002.00096.x.

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Rozprawy doktorskie na temat "Freshwater fishes"

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Kontula, Tytti. "Phylogeography and evolution of freshwater cottid fishes". Helsinki : University of Helsinki, 2003. http://ethesis.helsinki.fi/julkaisut/mat/ekolo/vk/kontula/.

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Khan, Tariq. "Exotic fish impacts on lake community structure and function in Western Victoria, Australia". Thesis, Federation University Australia, 2002. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/164899.

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The researcher investigated a number of closed catchment lakes in western Victoria that have been stocked with exotic fish. Exotic-native fish interactions were studied and the potential of the exotic species to affect the lake ecosystem structure was explored.
Doctor of Philosophy
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Miller, Peggy E. "Diagnosis, prevalence, and prevention of the spread of the parasite Heterosporis sp. (Microsporida: Pleistophoridae) in yellow perch (Perca flavescens) and other freshwater fish in northern Minnesota, Wisconsin, and in Lake Ontario /". Connect to online version, 2009. http://minds.wisconsin.edu/handle/1793/37972.

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Fogelström, Anna. "DNA barcoding of freshwater fishes in Matang, Malaysia". Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-255333.

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Heath, Daniel D. "An experimental and theoretical investigation of stunting in freshwater fish /". Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65985.

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Carden, Kerilynn M. "Macrophytes as fish habitat : the role of macrophyte morphology and bed complexity in fish species distributions /". Link to abstract, 2002. http://epapers.uwsp.edu/abstracts/2002/Carden.pdf.

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Ozburn, Nicholas R. "Influence of dams on stream fish biodiversity across a diverse Georgia landscape". Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/OZBURN_NICHOLAS_54.pdf.

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O'Connell, Martin T. "Immunological responses of fishes to glochidia of freshwater mussels". Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/41705.

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The immunological aspects of the interaction between fish and glochidia were studied using glochidia of the Alabama rainbow mussel (Villosa iris). Tested host species was the rock bass (Ambloplites rupestris) and non-host fishes were common carp (Cyprinus carpio) and goldfish (Carassius auratus). Ouchterlony double-diffusion tests showed that both the host and non-host species expressed a specific humoral response to glochidial antigens after being artificially infested with the parasites. Further microagglutination tests were completed to compare titers of host and non-host fishes which were either uninfested, infested, or reinfested with glochidia. These tests showed that host and non-host species exhibit humoral responses of similar strengths (similar titers) to glochidia. In addition, fishes infested with glochidia had higher titers than uninfested fishes, and reinfested fishes had titers higher than both uninfested and infested fishes. Results indicate that fishes express anamnestic responses to glochidia. Because many host-specific parasites mimic their host’s antigens to avoid full immune attack, I tested for antigen mimicry in glochidia. Goldfish were injected with host (rock bass) and non-host (carp) antigens, in the form of sera, and then re-exposed to glochidial antigens at a later time. This test and other experimental results show no evidence of mimicry of host antigens by glochidia before attachment to host fish. Immunoelectrophoresis (IEP) was used to compare precipitation patterns of host and non-host fishes and to determine whether IEP can be used for identifying suitable hosts for a species of mussel. Although there were subtle differences observed between the precipitation bands of host and non-host fishes using IEP, successful molecular host identification will require more precise electrophoretic methods. The precipitation patterns of glochidial antigens and transformed juvenile antigens (reacted with anti-glochidia fish anti-sera) were compared to determine whether glochidia develop new antigens to avoid a full immune attack during glochidiosis. No precipitation occurred in trials using transformed juvenile antigens; therefore, pre-infestation glochidia and post-infestation juvenile mussels are antigenically different.
Master of Science
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Ross, Jason. "An investigation of the distribution patterns of aquatic vertebrates across four sites in the upper Parramatta River catchment /". View thesis View thesis, 2000. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030429.115844/index.html.

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Thesis (M.Sc. (Hons.)) -- University of Western Sydney, 2000.
"A thesis submitted in part-fulfilment of the requirements for the degree of Master of Science (Honours)" Bibliography : leaves 131-152.
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Hassan, Marina. "Parasites of native and exotic freshwater fishes in the south-west of Western Australia". Thesis, Hassan, Marina (2008) Parasites of native and exotic freshwater fishes in the south-west of Western Australia. PhD thesis, Murdoch University, 2008. https://researchrepository.murdoch.edu.au/id/eprint/704/.

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Fewer than 200 fish species are found in freshwater habitats in Australia, of which 144 are confined exclusively to freshwater. At least 22 species of exotic freshwater fish have been introduced into Australia, and 19 of these have established self-sustaining populations. However, the parasite fauna of both native and exotic freshwater fishes in Australia is poorly known. This is particularly the case in the south-west of Western Australia, where there have been no previous comprehensive studies of the parasites of 14 native species and nine or more exotic species of fish found in freshwater habitats. This study represents a survey of the parasites of freshwater fishes in the South West Coast Drainage Division and reports 44 putative species of parasites in 1429 individual fishes of 18 different species (12 native and six exotic) from 29 locations. Parasites were found in 327 (22.88%) fishes, and of the infected fishes, 200 (61.16%) were infected with only one species of parasite and 127 (38.84%) were infected with two or more species of parasites. For helminth and arthropod parasites, which were more comprehensively surveyed than protozoan and myxozoans, I found 37 species compared to 77 species found in a recent study of fishes from the East Coast Drainage Division. The present study demonstrated that parasitic infection was significantly more common in native fish species (mean prevalence of infection with any species of parasite = 0.36 ± 0.09) than in exotic fish species (0.01 ± 0.12). Parasites were found in all native fish species, but in only two exotic fish species that were examined. Parasite regional and component community diversity were estimated by species richness (the number of species, S) and by an index of taxonomic diversity (HT). Both parasite species richness and parasite taxonomic diversity were significantly greater in native fish species (mean S = 10.5 ± 2.3; mean HT = 1.19 ± 0.14) than in exotic fish species (mean S = 1.6 ± 3.3; mean HT = 0.27 ± 0.20). These relationships were consistent over all geographic locations that were sampled. The reduced parasite load of exotic species compared to native species has been previous reported across a wide range of taxa. It is thought to arise partly because founding populations of hosts have a low probability of harbouring the species’ total parasite fauna, and partly because parasites that infect introduced exotic species may not be able to maintain their life cycle in the new environment. It has been suggested that a reduced parasite load increases the competitive ability of exotic species compared to native species (the parasite release hypothesis) and this may partly explain the abundance and apparent competitive success of exotic over native species of freshwater fish in the South West Coast Drainage Division. For native species of fish, there were major differences among species in both prevalence of parasitic infection and parasite community diversity, but this variation was not related to fish size, whether the fish were primarily freshwater or primarily estuarine, or whether they were primarily demersal or pelagic. In this study, I report two new parasites in south western Australian waters. Both are copepod parasites; Lernaea cyprinacea and a new species of Dermoergasilus. The Dermoergasilus appears to be native to the south-west of Western Australia and has been described as Dermoergasilus westernensis. It differs from previously described species in the genus principally by the armature of the legs. This new species was found on the gills of freshwater cobbler, Tandanus bostocki and western minnow, Galaxias occidentalis in two different river systems. Lernaea cyprinacea is an introduced parasitic copepod found on the skin and gills of freshwater fishes in many areas of the world. The parasite has not previously been reported in Western Australia. We found infestations of L. cyprinacea on four native fish species (G. occidentalis; Edelia vittata; Bostockia porosa; T. bostocki) and three introduced fish species (Carassius auratus; Gambusia holbrooki; Phalloceros caudimaculatus) at two localities in the Canning River, in the south-west of Western Australia. The parasite has the potential to have serious pathogenic effects on native fish species, although it appears to be currently localised to a small section of the Canning River. Over all localities from which fishes were sampled in the present study, the proportion of native freshwater fishes with parasitic infections and the component community diversity of the parasite fauna of native fishes were both negatively related to habitat disturbance, in particular to a suite of factors (river regulation, loss of riparian vegetation, eutrophication and presence of exotic fish species) that indicate increased human usage of the river and surrounding environment. The reduced parasite load and diversity in native fishes from south-west rivers with greater human usage was due principally to the loss of a number of species of trematode, cestode and nematode endoparasites which use fishes as intermediate hosts. Other studies have also found that endoparasites with complex life cycles are most likely to be adversely affected by environmental changes, presumably because any environmental changes which impact on either free-living parasite stages or on any of the hosts in the complex train of parasite transmission will reduce parasite population size and may cause local extinction of the parasite species. The most heavily infected species of native freshwater fish in the South West Coast Drainage Division was T. bostocki with 96% of all individuals containing at least one species of parasite. As with most freshwater fishes of south-west Australia, T. bostocki is limited in its distribution to waterways with relatively low salinity. The degree of parasitism and histopathology of internal and external organs in T. bostocki from the Blackwood River was examined over a period of rapid, seasonal changes in water salinity. As salinity increased, the infracommunity richness and prevalence of ectoparasites on the skin of fishes decreased, while the infracommunity richness and prevalence of endoparasites increased. This was associated with a decrease in histopathological lesion scores in the skin and an increase in histopathological lesion scores in internal organs, particularly the intestine. I hypothesise that the seasonal spike in salinity had two contrasting effects on parasitic infections of T. bostocki. Firstly, it increased the mortality rate of parasites directly exposed to water, leading to a decrease in ectoparasitic infection and associated pathology. Secondly, it suppressed immune function in fish, leading to a decreased mortality rate of parasites not directly exposed to water and a more severe pathological response to endoparasitism.
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Książki na temat "Freshwater fishes"

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Buckmaster, Marjorie L. Freshwater fishes. New York: Marshall Cavendish Benchmark, 2007.

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Schmida, Günther E. Freshwater fishes. Archerfield, Qld: Steve Parish Pub., 2008.

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Schmida, Günther E. Freshwater fishes. Archerfield, Qld: Steve Parish Pub., 2008.

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Buckmaster, Marjorie. Freshwater Fishes. S.l: Benchmark Books, 2007.

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Strangis, Jay Michael. Freshwater fishing secrets. Minneapolis, Minn: North American Fishing Club, 1990.

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Sternberg, Dick. Freshwater fishing secrets. Minnetonka, Minn: North American Fishing Club, 1997.

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Arrignon, Jacques. Management of freshwater fisheries. Rotterdam: A.A. Balkema, 1999.

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McGinnis, Samuel M. Freshwater fishes of California. Berkeley, CA: University of California Press, 2004.

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Club, North American Fishing, red. Freshwater fishing secrets II. Minneapolis, Minn: North American Fishing Club, 1992.

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McDowall, R. M. New Zealand Freshwater Fishes. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9271-7.

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Części książek na temat "Freshwater fishes"

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Merrick, J. R. "Freshwater Fishes". W Care and Handling of Australian Native Animals, 7–16. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 1990. http://dx.doi.org/10.7882/rzsnsw.1990.002.

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Jonsson, Bror, i Nina Jonsson. "Fennoscandian freshwater fishes". W Freshwater Fisheries Ecology, 101–19. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118394380.ch8.

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Payne, A. Ian. "Asian upland fishes and fisheries". W Freshwater Fisheries Ecology, 377–83. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118394380.ch30.

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Lehtonen, Hannu. "Alien Freshwater Fishes of Europe". W Invasive Aquatic Species of Europe. Distribution, Impacts and Management, 153–61. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-015-9956-6_17.

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Skelton, Paul H. "The Freshwater Fishes of Angola". W Biodiversity of Angola, 207–42. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-03083-4_11.

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Dudgeon, David. "The fishes I". W Threatened Freshwater Animals of Tropical East Asia, 140–68. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003142966-5.

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Dudgeon, David. "The fishes II". W Threatened Freshwater Animals of Tropical East Asia, 169–209. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003142966-6.

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McDowall, R. M. "New Zealand’s Distinctive and Well-Known Freshwater Fish Fauna". W New Zealand Freshwater Fishes, 1–33. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9271-7_1.

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McDowall, R. M. "Pattern and Process in the Distributions and Biogeography of New Zealand Freshwater Fishes: The Diadromous Species". W New Zealand Freshwater Fishes, 241–56. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9271-7_10.

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McDowall, R. M. "Pattern and Process in the Distributions of Non-diadromous Species – 1: The Galaxias vulgaris Species Complex". W New Zealand Freshwater Fishes, 257–80. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9271-7_11.

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Streszczenia konferencji na temat "Freshwater fishes"

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Sheng, Lianxi, i Jingbo Xu. "Effects of Thermal Shock on Some Freshwater Fishes". W 2008 2nd International Conference on Bioinformatics and Biomedical Engineering (ICBBE '08). IEEE, 2008. http://dx.doi.org/10.1109/icbbe.2008.293.

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A.V., Shokurova, Anishchenko O. V., Kashinskaya E.N. i Solovyev M.M. "THE ELEMENTAL COMPOSITION OF BILE OF SOME MARINE AND FRESHWATER FISH SPECIES AND ITS POSSIBLE PRACTICAL APPLICATION IN AQUACULTURE". W II INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE "DEVELOPMENT AND MODERN PROBLEMS OF AQUACULTURE" ("AQUACULTURE 2022" CONFERENCE). DSTU-Print, 2022. http://dx.doi.org/10.23947/aquaculture.2022.29-31.

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The elemental composition of the bile of 429 fish individuals of 21 species of freshwater and marine fish has studied. Macroelements (Ca, K, Mg, Na, P, S), regardless of the diets and habitat of fish, were in the highest concentrations if compare to other elements. However, it is possible to note some differences in the concentrations of such macronutrients as K and Na between marine and freshwater species. Cu, Li and Sr were found in the bile of all studied freshwater species, while bile form marine species has always contained elements such as As, Cu, Li, Se and Sr. At the same time, Bi, Cd, Mo and Tl were absent in most species of both freshwater and marine fishes. Statistical analysis has revealed that such factors as “feeding habits”, “habit”, “season” and “year" had a significant effect on the elemental composition of fish bile. The obtained data of the elemental composition of bile are applicable to the creation of selective artificial nutrient media and species-specific feeds.
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Witono, Yuli, Iwan Taruna, Maryanto Maryanto, Riska Rian Fauziah i Wulan Suci Wahyuningtyas. "Antioxidant Activity of Protein Hydrolysates Derived from Javanese Freshwater Fishes". W Proceedings of the International Conference on Food, Agriculture and Natural Resources (FANRes 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/fanres-18.2018.44.

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Q.M. AL-HAYYALI, Fatimah. "SPONTANEOUS HISTOPATHOLOGICAL LESIONS OF THE INTESTINES, LIVER, PANCREAS AND HEART OF THE FRESHWATER FISH MASTACEMBELUS MASTACEMBELUS (BANKS & SOLANDER 1794)". W V. International Scientific Congress of Pure, Applied and Technological Sciences. Rimar Academy, 2022. http://dx.doi.org/10.47832/minarcongress5-24.

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The purpose of this study was to report spontaneous histopathological lesions of the intestines, liver , pancreas and heart of Mastacembelus mastacembelus collected from Tigris river, Ninevha Province, Iraq. Parasitic infections of the intestinal tissues were common in these fishes and were in the form of parasitic nodules in the intestinal submucosa consisting of the parasites or their larval stages surrounded by fibrous tissue capsules. Focal or diffuse infiltrations of mononuclear cells (macrophages, lymphocytes and plasma cells) were seen involving most of the intestinal layers. Patchy degeneration and desquamation of the intestinal epithelium were observed in some of the infected fishes. The livers of these fishes showed dilatation of the sinusoids, focal hepatitis with the infiltration of inflammatory mononuclear cells, and portal fibrosis. Myocarditis occurred in these fishes and was characterized by the infiltration of mononuclear cells between the bundles of myocardial fibers. A similar infiltration of mononuclear cells was seen in the pancreatic srtoma. From results of this study it was concluded that naturally – occurring pathological lesions are common in fishes of the species M. mastacembelus and that further studies are needed to a certain the nature of the etiological agents
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G. V., Izotova, Vlasenko P. G., Kashinskaya E. N. i Solovyev M. M. "IDENTIFICATION OF DIPLOSTOMOSIS PATHOGENS OF PREDOMINATING FISH SPECIES OF SIBERIA USING DNA-BARCODING APPROACH". W II INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE "DEVELOPMENT AND MODERN PROBLEMS OF AQUACULTURE" ("AQUACULTURE 2022" CONFERENCE). DSTU-Print, 2022. http://dx.doi.org/10.23947/aquaculture.2022.53-55.

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Metacercariae of the genus Diplostomum are localized in the eyes and the brain of freshwater fish and cyclostomata species causing different types of diplostomosis. Hyperinvasion by these parasites lead to spatial disorientation, changing in feeding activity, lowering the growth rate, etc. Species identification of Diplostomum spp. based on the morphological features is difficult due to the lack and severity of them. In present study, species diversity of the genus Diplostomum metacercariae parasitizing in fishes of Chany, Baunt and Teletskoye lakes is defined according to the DNA-barcoding approach based on mtDNA fragment cox1 (595 bp). Parasite sequences from the fishes inhabited studied lakes formed 11 clades of the species level. The lowest diversity was noted for an eutrophic Lake Chany – 3 species, whereas for an oligotrophic lakes Teletskoye and Baunt – 8 species were found.
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Farah-Ayuni, F., A. O. Muse, A. Samat i M. N. Shukor. "Comparative scale morphologies in common freshwater fishes of Peninsular Malaysia – A case study". W THE 2016 UKM FST POSTGRADUATE COLLOQUIUM: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2016 Postgraduate Colloquium. Author(s), 2016. http://dx.doi.org/10.1063/1.4966850.

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Duarte, Gonçalo, Maria João Costa, Pedro Segurado, Afonso Teixeira, José Maria Santos, Maria Teresa Ferreira i Paulo Branco. "The Red List Threats to European Freshwater Fishes—Spatial Patterns and Knowledge Gaps". W SIBIC 2022. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/blsf2022013109.

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Sousa, Debora Batista Pinheiro, Audalio Rebelo Torres, Suelen Rosana Sampaio Oliveira, Jonatas da Silva Castro i Raimunda Nonata Fortes Carvalho Neta. "Micronuclei and erythrocytic abnormalities frequencies of freshwater fishes: Establishing a baseline for health status". W PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2017 (ICCMSE-2017). Author(s), 2017. http://dx.doi.org/10.1063/1.5012413.

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Putland, Rosalyn Luisa, i Allen F. Mensinger. "The effect of sound produced by vessel passage at a navigational lock on freshwater fishes". W 5th International Conference on the Effects of Noise on Aquatic Life. ASA, 2019. http://dx.doi.org/10.1121/2.0001113.

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Yahya, Mohd Azham, i Harinder Rai Singh. "An assessment of the distribution of the freshwater fishes of the Taman Negara Pahang, Malaysia". W 2012 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA). IEEE, 2012. http://dx.doi.org/10.1109/isbeia.2012.6422863.

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Raporty organizacyjne na temat "Freshwater fishes"

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Abramov, A. F., T. V. Salova, K. M. Stepanov, V. T. Vasileva, A. A. Efimova, T. V. Sleptsova, T. A. Platonov, N. A. Matveev i S. M. Timofeev. Nutritional and biological value of freshwater fishes of rivers Yakutia. АНС «СибАК», 2018. http://dx.doi.org/10.18411/0821-2016-0005-2018.

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Schweizer, Peter E., Glenn F. Cada i Mark S. Bevelhimer. Laboratory Experiments on the Effects of Blade Strike from Hydrokinetic Energy Technologies on Larval and Juvenile Freshwater Fishes. Office of Scientific and Technical Information (OSTI), marzec 2012. http://dx.doi.org/10.2172/1037662.

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Bennett, Oliver. Freshwater habitat restoration. Parliamentary Office of Science and Technology, styczeń 2024. http://dx.doi.org/10.58248/pn709.

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Freshwater habitats, such as rivers and wetlands, provide major benefits to society through services such as flood risk reduction and drinking water. However, many of these habitats are in a poor condition. They have been damaged by a range of human activities including physical modification and pollution. For example, an estimated 90% of wetlands have been lost over the last century. Restoration of freshwater habitats can be achieved by addressing the causes of degradation and by enhancing or extending habitats. There is good evidence on the benefits of some forms of restoration. For example, restoration can deliver effective flood defence and restore fish populations. However, certain restoration measures are less well-studied. There are numerous national and international targets for the restoration of freshwater habitats. These include a commitment to improving at least 75% of waters to close to their natural state as soon as practicable by 2042. However, some stakeholders believe that these commitments will not be met under current plans in England. There have been calls for various actions including: increased and long-term funding to deliver larger-scale projects changes to policy and legislation to deliver more joined-up decision making and to include small water bodies and headwaters further prevention of degradation, including better enforcement of existing legislation the removal of barriers to nature-based solutions Policy in this area is devolved. For England, the UK Government published a Plan for Water in 2023 that contained new actions to help improve the condition of freshwater habitats. The Office for Environmental Protection will publish an assessment of the Government’s approach in 2024.
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Hoy, Michael D. Herons and Egrets. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, sierpień 2017. http://dx.doi.org/10.32747/2017.7208742.ws.

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Herons and egrets commonly cause damage at aquaculture facilities and recreational fishing waters where fish are held at high densities. Fish-eating birds also can have an impact on intensively managed sport fisheries. Damage occurs when herons and egrets feed on fish purchased and released for recreational sport fishing activities. Values of these fish can be quite high given the intensity of management activities and the direct relationship of fishery quality to property value. Herons and egrets are freshwater or coastal birds of the family Ardeidae. Herons and egrets discussed in this section are all piscivorous. They are opportunistic feeders, however, and will consume small amphibians, insects, and reptiles. Due to these food preferences, herons and egrets are attracted to shallow lakes and human-made impoundments. Native bird species are covered under the Migratory Bird Treaty Act (MBTA) and given federal protection. Depredation permits can be obtained through the U.S. Fish and Wildlife Service. In addition, individual states may require their own permits for legal take of these bird species.
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Vasileva, V. T., T. V. Sleptsova, N. A. Matveev i S. M. Timofeev. BIOLOGICAL VALUE OF FRESHWATER FILLET FATS FISH RIVER YAKUTIA. СФНЦА РАН, 2018. http://dx.doi.org/10.18411/156453-18.

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Albright, Jeff, Kim Struthers, Lisa Baril, John Spence, Mark Brunson i Ken Hyde. Natural resource conditions at Glen Canyon National Recreation Area: Findings & management considerations for selected resources. National Park Service, kwiecień 2022. http://dx.doi.org/10.36967/nrr-2293112.

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Glen Canyon National Recreation Area (GLCA) encompasses more than 0.5 million ha (1.25 million ac) and extends over 322 km (200 mi) from its northern boundary in southern Utah to its southern boundary in northern Arizona. It is one of the most rugged, remote, and floristically diverse national parks on the Southern Colorado Plateau (Thomas et. al 2005) and has more than 4,900 km (3,045 mi) of waterways flowing through its eight Hydrologic Unit Code (HUC 8) watersheds. GLCA’s larger perennial rivers include the Colorado, Escalante, Dirty Devil, San Juan, and Paria, with smaller perennial and intermittent streams flowing into each of these rivers. After the creation of the Glen Canyon Dam, Lake Powell formed, covering 13% of the park’s total land area when full and the national recreation area attracts over 4 million visitors annually, and in 2019 GLCA ranked 19th highest in recreational visits out of all national parks. The National Park Service Natural Resource Condition Assessment Program selected GLCA to pilot its new NRCA project series. NRCA projects evaluate the best available science to provide park managers with reliable, actionable information pertaining to natural resource conditions in their park. For the park-selected focal study resources, this includes consideration of drivers and stressors known or suspected of influencing resource conditions; assessment of current conditions and trends for indicators of condition; and potential near-term and future activities or actions managers can consider, improving their knowledge and management of natural resources in parks. For focal resources that lack adequate data to assess current conditions, a gap analysis is provided (in lieu of a condition assessment) to highlight the present status of knowledge of the resource and to suggest useful indicators, data, and studies for further consideration and investigation. Park managers are encouraged to identify information needs and pose questions during the NRCA scoping process, with the understanding that information will be provided to help address those needs and answer those questions when possible. For a comprehensive list of GLCA managers’ questions and needs, please refer to Appendix A, Table A-1. The focus of GLCA’s NRCA study was the water-dependent resources—tinajas, springs & seeps, including water quality, riparian zone, amphibians, including the northern leopard frog (Lithobates pipiens), and small, native fishes—that are found off the mainstem Colorado River. Managers were interested in these particular environments and the natural resources that depend on them because they are less studied, and the habitats are “biodiversity hotspots” due to the intersection of complex desert and freshwater ecosystems in a region limited by water. The following summaries highlight the key findings of GLCA’s focal resource drivers and stressors (Chapter 2), states (Chapter 3), and manager responses (Chapter 4).
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Poston, T. M., i D. C. Klopfer. Literature review of the concentration ratios of selected radionuclides in freshwater and marine fish. Office of Scientific and Technical Information (OSTI), wrzesień 1986. http://dx.doi.org/10.2172/5000198.

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Cada, Glenn F., Mark S. Bevelhimer, Allison M. Fortner, Kristina P. Riemer i Peter E. Schweizer. Laboratory Studies of the Effects of Static and Variable Magnetic Fields on Freshwater Fish. Office of Scientific and Technical Information (OSTI), kwiecień 2012. http://dx.doi.org/10.2172/1038484.

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Naddafi, Rahmat, Göran Sundblad, Alfred Sandström, Lachlan Fetterplace, Jerker Vinterstare, Martin Ogonowski i Nataliia Kulatska. Developing management goals and associated assessment methods for Sweden’s nationally managed fish stocks : a project synthesis. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.31cfjep2i0.

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This report summarizes and synthesizes results from the Swedish Agency of Marine and Water Management (SwAM, or HaV) funded project “Förvaltningsmål för nationella arter (Management goals for nationally managed species)”. The objectives of the project have been to promote the development of management goals and associated status assessment methods and indicators, as well as reference points, for some nationally managed fish stocks both in coastal as well as freshwater areas. The report focusses largely on species and stocks that can be defined as data-poor. Such stocks are characterised by marked limitations in data availability and/or resources allocated to detailed analytical stock projections. Data-poor stocks also often lack carefully formulated management goals and associated methods and indicators for assessing stock status. In this report, we provide an overview of potential assessment methods and indicators and try to synthesise how they work and what the strengths and weaknesses are by applying them to selected data poor stocks such as pikeperch, pike, whitefish, and vendace. We also discuss how they relate to different potential management goals and provide recommendations for their application. We grouped the indicators and assessment methods by the three categories that are now used in the yearly status assessment framework provided by SLU Aqua (Resursöversikten/Fiskbarometern) – i) mortality, ii) abundance/biomass and iii) size/age structure. The results are also described for these three main categories of assessment indicators. Included is also a status report from a size- and age-based population dynamics model (Stock Synthesis 3) that is being developed for pikeperch in Lake Hjälmaren. An important experience from the project is that to improve the assessment methods for Swedish national fish stocks, it is important that managers develop both general as well as more detailed quantitative goals for the individual stocks. This should ideally be conducted in various forms of collaboration with the main stakeholders and scientists involved with assessment as participatory processes foster legitimacy. Carefully articulated management goals, which are possible to translate into quantitative targets, will facilitate the development of various approaches and methods to monitor stock statuses. Given the strong and complex interactions of fish and their environments it is also important to consider other pressures than fisheries when developing indicators and assessment methods. Our synthesis highlights a number of areas where the assessment of data-poor stocks can be improved: 1. Apply precautionary principles for data-limited stocks, particularly ones that are known to be vulnerable to exploitation. 2. Tailor approaches to how fisheries are managed in Sweden. Swedish nationally managed fish stocks are not managed by quotas (with one exception, vendace in the Bothnian Bay) and do not aim for maximum sustainable yield. Instead, the coastal and inland fisheries are managed by regulating the effort in the small-scale commercial fisheries (number of fishers/licenses and amount of gear). Regulation of recreational and subsistence fisheries effort, in terms of licenses or number of fishers) is not applied, nor possible since the fisheries is lacking obligatory notification and reporting systems. All national fisheries, however, are regulated by various technical measures (closed areas, size-limits, bag-limits, gear restrictions etc). Thus, goals and assessment methods that result in harvest limits or quota recommendations expressed in e.g. biomass/numbers are difficult to use as basis for management. Instead, there is a need for alternative management goals and associated assessment methods. 3. Use best practice methods and indicators and adapt as scientific knowledge is developed. Data-limited methods are developing rapidly, and new methods/approaches are proposed in the scientific literature every year. It is thus important to be updated on the most recent developments. 4. Clearly describe limitations/assumptions of methods used. It is important to be aware of and critically evaluate the assumptions underlying the analyses, and to carefully communicate uncertainty together with the stock status assessment. 5. Be particularly careful with low sample numbers. Many indicators and methods can be applied also on small sample sizes, however, the accuracy and precision of the estimates risk being low in such cases. 6. Accept that there is no "gold standard" for fisheries assessment. Each case study is unique and needs to be balanced against data availability, local needs and other important factors. This also means that analysts need to be careful when using generic reference levels or “borrowing” data from other stocks. 7. If possible, use several different methods/indicators. Although several indicators aim to measure similar aspects of the stock, small methodological differences can support the overall interpretation of individual indicator values. It is particularly important to incorporate many aspects and indicators (size/age/abundance/mortality) in order to produce a balanced assessment. 8. Develop means of communication. Indicators and goals should be easy to understand. However, interpretation of results from multi-indicator frameworks can be challenging. There is thus a need for finding ways of communication that can convey complicated results in a simple-to-understand manner. 9. For details on additional improvements, we refer the reader to the sub-header “recommendations for the future” found under each chapter. The implementation of Stock Synthesis for pikeperch in Lake Hjälmaren showed that it is possible to develop a more ambitious and detailed stock assessment model for a relatively data-poor stock. The model results partly support earlier interpretations of the development of the stock and the importance of the changes in regulations in 2001 (increased minimum size, increased mesh size and reduced mortality of undersized pikeperch). Before the model can be implemented and used for practical management, a number of actions for improvement are needed, which are highlighted in the relevant chapter. The most important next step is establishing management goals and reference levels for this stock. We recommend that such a dialogue is initiated by managers. The fisheries management goals should consider both biomass, fisheries mortality and size-based targets. To conclude, we stress the importance of improving all ongoing aspects related to the assessments of data-poor Swedish stocks. Strong local stocks and sustainable fisheries are vital for a variety of fisheries-related businesses and practices, particularly in rural areas, providing economical and societal value. Fishes also have important roles in aquatic food-webs and it is important that ecological values are managed wisely in order to reach targets for water quality, ecosystem structure and diversity. Given the strong and complex interactions of fish and their environments it is also important to consider other pressures than fisheries when developing indicators and assessment methods.
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Guram, M. S. Development of critical life stage assays: Teratogenic effects of SRS effluent components on freshwater fish, gambusia. Office of Scientific and Technical Information (OSTI), listopad 1990. http://dx.doi.org/10.2172/6225646.

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